Management server: Operations manager uses management server to receive management packs from the root management server after which it distributes them to various agents that report information back to the management server
Web console server: Provides web browser based view into your operations manager infrastructure
Reporting server: The server on which reports are generated and prepared for viewing. This is an SQL server 2005 sp1
Reporting data warehouse server
-- Raw data stored for 14days
-- Summary –hourly & daily – data stored for 400 days.